One of our customers has a problem, has 4 email accounts in the domain, of which one account receives emails from the other accounts from the same domain in the junk mail box.
Of the 4 accounts, they can only receive correctly from 1 account.
It does not have any filter or block in the configuration.
[2018.08.14] 11:40:51 [30786] Delivery started for ventas@aseasanet.com.mx at 11:40:51 AM
[2018.08.14] 11:40:54 [30786] Added to SpamCheckQueue (0 queued; 2/50 processing)
[[30786] Starting Spam Checks.
[2018.08.14] 11:40:55 [30786] Skipping spam checks: User authenticated
[2018.08.14] 11:40:55 [30786] Spam Checks completed.
[2018.08.14] 11:40:55 [30786] Removed from SpamCheckQueue (2 queued or processing)
[2018.08.14] 11:40:57 [30786] Added to LocalDeliveryQueue (1 queued; 0/50 processing)
[2018.08.14] 11:40:57 [30786] Starting local delivery to contabilidad@aseasanet.com.mx
[2018.08.14] 11:40:57 [30786] Delivery for ventas@aseasanet.com.mx to contabilidad@aseasanet.com.mx has completed (Delivered) Filter: None
[2018.08.14] 11:40:57 [30786] End delivery to contabilidad@aseasanet.com.mx (MessageID: <99C2852B-0EF9-4A0D-B8E2-95BC429A4139@aseasanet.com.mx>)
[2018.08.14] 11:40:57 [30786] Removed from LocalDeliveryQueue (0 queued or processing)
[2018.08.14] 11:40:57 [30786] Delivery finished for ventas@aseasanet.com.mx at 11:40:57 AM [id:586768830786]
According to this log, the email was succesfully delivered, but was delivered to the junk mail box.